diff --git a/processing/src/test/java/org/apache/druid/java/util/common/guava/ParallelMergeCombiningSequenceTest.java b/processing/src/test/java/org/apache/druid/java/util/common/guava/ParallelMergeCombiningSequenceTest.java
index 5b76afb90229..293943dcca9d 100644
--- a/processing/src/test/java/org/apache/druid/java/util/common/guava/ParallelMergeCombiningSequenceTest.java
+++ b/processing/src/test/java/org/apache/druid/java/util/common/guava/ParallelMergeCombiningSequenceTest.java
@@ -605,7 +605,7 @@ public void testTimeoutExceptionDueToStoppedReader() throws InterruptedException
     }
 
     // sleep until timeout
-    Thread.sleep(1000);
+    Thread.sleep(5000);
     Assert.assertTrue(pool.awaitQuiescence(10, TimeUnit.SECONDS));
     Assert.assertTrue(pool.isQuiescent());
     Assert.assertFalse(pool.hasQueuedSubmissions());